Improvement in middlings-separators



M. N. ELWELL. MIDDLINGS-SIEIPA'RATYOR.

No. 174,726. Patented March 14, 1876.

mm on LFETERs, PHOTO-UTHOGRAFHEII, WASRXNGTON. D C.

UNITED STATES PATENT OFFICE. I

MORRIS N. ELWELL, OF ONEONTA, NEW YORK.

IMPROVEMENT IN MlDDL'lNGS-SEPARATORS.

Specification forming part of Letters Patent No. 174,726, dated March14, 1876; application filed January 22, 1876.

To whom it may concern: 7

Be it known that I, MORRIS N. ELWELL, of Oneonta, in the county ofOtsego and State of New York, have invented a new and ImprovedMiddlings-P-urifier, of which the following is a specification:

My invention consists of a simple contrivance of apparatus forseparating the impurities by ascending air-blasts acting upon descendingstreams of middlings.

Figure 1 is a longitudinal section of my improved inaehine, the sectionbeing taken on line 00 m of Fig. 2. Fig. 2 is a plan View.

Similar letters of reference indicate corresponding parts.

A is a vertical drat'tbox, in the upper part of which are a number ofinclined slats, B, for breaking and distributing the stream of middlingsand the current of air,

said slats being at the entrance of a horizontal box, D, along which theparticles carried over from the vertical box are carried over a hopper,E, into which the final separation is made by a lighter current up thespout F.

The middlings are fed into the upper end of box A from a hopper, H, shoeI, and regulating-slides J K, and the bran is discharged through the fanL. The box D is provided with a regulating-slide, M, for controlling theair-currents as required. Below this apparatus is a duplicate set, inwhich the middlings falling from box A are treated again in the samemanner byair-currents set in motion by fan L, the said apparatusconsisting of hopper H, slide J, slats B, vertical box A,

horizontal box D, hopper E, regulating-slide M, and spout F.

Having thus described my invention, I claim as new and desire to secureby Letters Pat-.

ent

The combination of the hoppers H H, shaking-shoe I, draft-boxes A A,inclined slats B B, horizontal boxes D D, and hoppers E E,

